Explore the security vulnerabilities of Mobile Point-of-Sale (mPOS) systems in this Black Hat conference talk. Dive into the weaknesses of leading Chip&Pin payment solutions for mobile devices, uncovering a series of exploitable flaws that allow code execution through various input vectors. Learn about the hardware and software components of mPOS devices, including their internal filesystem and update mechanisms. Witness live demonstrations of multiple attack vectors, with a focus on a malicious credit card capable of deploying a remote root shell on embedded mPOS devices. Examine the implications for small businesses and the broader financial technology sector, and gain insights into potential security improvements for these widely-used payment systems.